The monkey gainer or kong gainer is a free running move which involves a practitioner performing a monkey or kong vault and using the leverage from their arms to push themselves immediately into a gainer without their feet coming into contact with the ground.
The monkey gainer has now been landed outside onto grass by several people, but some of the first successful attempts and developments are listed below
- On April 15th 2007, a video showing Daniel Ilabaca doing a Monkey Gainer at the Pavilion in Liverpool was uploaded to Chris Ilabaca's YouTube account. The clip had the effect of a bomb in the Free Running community because not only was it a brand new move but it was also done off a fairly high drop into grass. The clip was originally uploaded as Monkey Gainer, but then changed to Kong Gainer due to people complaining about the name. It was also mentioned that Danny practised this move in his garden by doing it onto his back from a low height onto a crash mat, then when he knew he was ready he took it to the Pavilion.
- Later in April Daniel also performed the kong gainer over the railing at Festival Pier, London.
- Ryan Doyle did the move on soft park floor(play floor) in July 2007. It is noticeable that his head comes closer to the wall, but he makes the rotation faster. It also appeared later in his video Crazy Park Day.
- Ryan Spangler was the first person to do the kong gainer on flat, he did it on plyo in a gym. Not only was he the first one to do so but he also did the combo: kong gainer to frontflip.
- On September 3, 2009, Bjarke Hellden uploaded a video of himself performing the kong gainer on a level, hard wooden floor, over a single wooden beam. This was the first time it had been seen on flat ground on anything harder than plyo.
- A clip was released on November 30, 2009 of Daniel Ilabaca performing a standing monkey gainer from the top of the Pavilion (a height of about 30 feet) onto a small pile of crashmats. This was both the highest recorded monkey gainer and the first attemp from standing
- Herttua released a 2009/10 winter sampler included a monkey gainer on flat straight into a roundoff double full on plyo. It also featured a kong gainer 360 attempt into a foam pit, and a kong double gainer attempt, although he didn't get over his head on the second flip.
- Double kong gainer - A double kong instead of a single kong. So far this move has only been landed onto soft surfaces in gyms.
- Monkey double gainer - The athlete stays tucked after the first flip in order to complete a second one before landing. So far, it has only been done into a foam pit.
- Monkey gainer 360 - The gainer includes a 360 spin or fulltwist, making it a gainer 360. First landed by Pasha onto sand in a video called Pasha & Stas Sands of Time. The twist was after the flip., but it is yet to be attempted outside.
- Frog Gainer - A kong gainer where you do a ground kong into the gainer where there is a drop. No ledge is needed. First done by Pasha at Red Bull Art of Motion 2010.
- "Kong Gainer", Ryan Doyle. Youtube.
- "YouTube - Monkey Gainer". Youtube.com
- "Kong Gainer", Daniel Ilabaca. Youtube.
- Chris Ilabaca, Youtube description: "I've decided to change the name for or the die hard fans of name calling, as we can see this is clearly a Kong Gainer... Not a monkey Gainer... Really sorry! While learning this move Daniel wasn't focused on the name? i will pass on the message tho.. He needs to focus on the name first and then the movement.. Thank you for your advice everyone!"
- Chris Ilabaca, Youtube comments: "Daniel learnt the basis of this move in his garden on a mat.. He'd never done it in the gym."
- "Another Day of Fun", Daniel Ilabaca. Youtube.
- "YouTube - Daniel Ilabaca". Youtube.com
- "Kong Gainer", Ryan Doyle. Youtube.
- "YouTube - Ryan Doyle Crazy Park Day". Youtube.com
- "Monkey Gainer/Kong Gainer", Ryan Spangler. Youtube.
- "Summer: 1", Ryan Spangler. Youtube.
- "YouTube - Monkey Gainer on plain ground". Youtube.com
- "YouTube - OVRGRD MIXTAPE VOL 1". Youtube.com
- "YouTube - Herttua - Brains on a vacation". Youtube.com
- "YouTube - Monkey Gainer 360". Youtube.com
- "Training Sampler 2007" - Youtube.com
-  - Pasha & Stas Sands of Time